Folding machine



Feb, 19253.

FOLDING MACHINE Original Filed May l?, 1917 2 SheosSheet l angl? Feb. 24, 1925. emfm y c. G. HRQSTRQM E? AL FOLD NG MCHNZI @riginal Filed May l?, 193.7 2 Sheets-Sheet '2 and depressing the upper leed point, to render the same varyingly effective or ineffective, at will. By actuating the treadle, therefore; first, the clutch may be thrown in, to start the machine; and then, by a further movement of the treadle, the feed point may be depressed and the effective feed movement started.

The foregoing and other objects and advantages of the invention will more fully appear from the following detailed description, and the distinctive features of novelty will be pointed out in the appended claims.

Referring to the drawings, Fig. 1 is a. central, longitudinal, vertical scction'of a machine constructed in accordance with the present invention; Fig., 2 is a fragmentary detail, illustrating the immediate working parts in side elevation; Figi. 3 is a detail front view or the machine ;l Fig. l is a partial view oi: the front of the machine, with certain parte removed, and others in section upon the line JL-*Ll of Fig. 1, looking in the direction ol the arrows, to illustrate the ininiediate Working elements; Fig. is a sectional detail on line 5-5 of Fig. 1, looking in the direction of the arrows; Fig. (i is a 'fragmentary perspective, showing a vamp and the innnediate Working parts in Opera- 110 tivo relation thereto; 'F i gr. 7 is a fragmentary detail, in Section vupon the line. 7-7 of Figi'. 2. lookin;r in the direction of the arrows, also showing' the immediate working parts in operative relation to a Vamp; Fig. 8 iS it 12' vertical section taken upon the line 8--8 or' Fig. l, lookingr in the direction olE the arrows, showing the working; ports in detail, actingA on a ramp; and Fig. 9 is a detail similar to Fig. S, .showing the operative parts occupyingy another position.

The l'ranie or housing ot' the machine ron'iprisos a body portion l0, extending up into a curved overhangiug portion ll, with a ioru'arillv extending nose l2. The nose l2 is spaced from' the body of the frame above an'extension 13, the extension l consl'ituting what is known as the horn of the machine. The frame is equipped with a hearing; 1l lo receive the roar portion of a drive shaft l5, in substantially the plane ol' the leed elen'ienis, referred to below. The l'or\\'ard end ot'- this shaft is journaled in a separate hearing bracket or Sleeve lli, which may he rigidly secured to the frame by a cross pin or rod 17. For adjustably centering lho bearing` sleeve 16, transve so screws lli are fitted 'from opposite side through u'ch portions o'l the machine housing, lo engage 'the sleeve at opposite points.

hand-endbalance Wheel 18 is keyed or suitablyv secured upon the outer oi the sl'iai'ft l5, and is provided With a The clutch face if) is adapt cu io no iririiouall)I engaged by a co-opcralirc clutch lace on the inner sido ol a drivmemes ing pulley 2`().that is fitted on a sleeve 2l. The clutch face of the pulley is normally held away from the clutch face 19 by e coil spring that is housed in e recess between the wheel 18 and the pulley 20. The sleeve 2l, which is slidably fitted loosely on the shaft l5, has a head 9. The pulley 20 is maintained in engagement with the head 9 by the spring 22. A head 23 is'tted in the outer end of the sleeve 2l and is engageable by a wear button 24, that is constituted of libre or the like, and that is carried at the upper, outer end of a lever arm 25. The lever arm 25 is pivoted to the frame at 26 and is rigidly provided with a long, horizontally extending arm 27. The arm 27 reaches most of the Way toward the front of the housing, Where its extremity is slotted 'to receive therein, with a capability oi end` 'ise sliding, a pivot block 28. rlhe pivot block 28 is carried at one end of a ,"liort, lever, link bar 29, the other end of vhich is pivoted at 30 to the end of one arm B1 ot' a bell-crank lever. 'Ehebell-crank leverns ulcrunred at 45 and its other arm 32 has'an adjustable stop pin 33 fitted in its extremity adapted to engage the frame as en abutment to limit the swinging movement of the saidvlever in one direction. The siringing of the said lever in the other direction is yieldably limited by an adjustable, headed bolt threaded into the 'frame and having a Coil spring 35 interposed between its head an d a seat in the lever arm 32. The lever bar 29 is pivotally connected at an intermediate point 36 to a depending' bracket 237, the pivot connection 36 being, as shown, nearer to the pivot block 2S than to the pivot 30, Jfor reason that Will later appear. The bracket 37 has a shoulder 38 formed thereon underneath the pivot 36 and is equipped with a depending pin 39 slidably iitted through a bearing strut 40 of the frame. compression coil spring;- 4l is interposed between this slrut and the shoul der 3h. Upon release of the treadle, the coil spring 4l will return the lever arms 27 and Ill to their illustrated, ineli'cctive positions, peruiittinpT the spring: 22 to disconnect the clulrh l'arcs andalso elevating lhe leed point. as will later appear. 'The bracket 37 is provided `with an offset portion havingI a pivot connection 42 to a depending rod 4.3. 'lhc rod eil is adapted to ho connected to a trcadlc (not shown), and typifies any Suitable control, preferably manual, for the power clutch and also for the upper feed point.

For applying a brake to the machine by the saine operating` device that controls the power clutch, a short, brake lever arm 105e is n'rounied on the pivot 26. rlhe arm 10ft is provided with a brake slice 105 that is adapted to engage the eriphery of the Wheel lll, '.lhe arm lOl has a downward lill) connected to a collar 93 that is slidably carried on an operating rod 9d. The collar 93 is held for limited movement between a stop collar 95 on the rod 9d and a sto head 96 carried at the end of the said ro and is normally held yieldingly against the collar 95 by a coil spring 9T that is inter posed between the collar 98 and the head 90. rlhe inner end of the rod 94; is pivotally connected at 98 to the lower end of a short lever 99. rl`he lever 99 is fulerumed to the frame at 100 and its upper end is provided with a contact piece 101 that is engageable with a cam face 102 fixed on the shaft 15. A coil spring 103 in anchored to the pivot 100 and engages the upper portion of the lever 99, thus Jpressing the said upper end of the said lever constantly' against the cam 102. rlie hammer 92 is therefore oscillated in timed relation to the feed movements. The hammer blows are rendered yielding or resilient to the required extent by reason of the interposed spring 97, while the upward inovement of the hammer is rendered positive by engagement of the fixed collar 95 with the slide 'collar 93.

A table is indicated at 109, and is shown fitted around the platform 110 at the front of the horn, this platform being a relatively small plate block adjustahly clamped to the top of the horn, and the table 109 being recessed, as seen at 111, to fit down over the same. The table has projections 112 at each side of the machine housing, extending to a. point well rearward thereof, where their extremities are fulcrumed, as seen at 113, to transverse pivots carried by the housing. The forward portion of the table is adjustably supported by prop posts 114 that are vertically threaded into the frame housing' at each side thereof, the adjustment of these prop posts permitting' the table to he adjust ably set so that its top surface will be approximately flush with the surface of the platform 110.

Referring now more particularly to the immediate workin;Y parts. as hithertoy eX plained, the stock is gripped for feeding` between the lower feed block 53 and the upper feed point 60, On the lower feed block 53 is carried the plow o1" folder 110, presenting a. curving face of changing;r outline, as shown more particularly in Figi'. '0, adapted to catch the horizontally extending edge of the vamp V and turn the same up to an approximately vertical position. The feed point and the feed block 53 are adapted to engage the material at a point such that the line joining this point to the plow 11G is substantially` at right angles to the line of feed'.v The plow and the feed elements are therefore as effective,

both to fold and to feed, at sharply curved portions of the margin, as at straight por- 'feeh as shown in Figs. t3, the operating device of 1 ,sarees tions. ,f the plow were at 'a substantial distance forward of the feed elements, f'or example, a sharply convex portion of the stock would be moved by the feed elements out of range of the plow, so as notto be folded at all thereby, and a sharply concave portion would be folded too far over by the low. The hammer 92 is formed with a orizontal extremity for engaging that portion of the work that is located just beyond the feed members, along the v line of feed. The operating mechanisml is timed so that the hammer shall move down to grip the turned-over edge of the stock, as seen in Fig. feed members are moving backward, preliminary to getting a new grip on the stock. In the said Fig. 9, the feed members are illustrated in the positions that they occupy just prior to their return movement. During this return movement, the plow 116, which moves with the feed block 53, performs the described operation of turning up the edge of the vamp. The upper feed point is, as shown, provided with a for wardly projecting finger 117 that is adapted to extend over and engage and guide the margin of the stock, just in advance of the plow, so as to hold it against the plow and reep it from buckling up prematurely, prior to the action thereon of the low. A snipping` knife 66 is arranged or cooperation with a fixed knife block 6"? mounted on the. horn portion of the frame, just in advence of the plow 11o, along the line of 7 and 8, and this knife is preferably timed to cause it to operate once at every other feed movement. Since the hammer 92 is mounted to extend obliquely upward and forward, its action on the edge of the stock will be in the same oblique direction, thus insuring the proper turning down of the margin of the vamp, that has alreadybeen turned upward by 4the plow 110.

In use, the operator, introducing the vamp V into the machine, places the margin thereof on the lower feed block 53. At this time, when the machine is idle, rthe feed block is relatively depressed under the action of the spring 41, and the upper feed point 60 is correspondingly lifted, so that ample oom is afforded for inserting' the work. llpon de ression of the treadle rod 43, the lever lin( 30 as a fulcrum, since the pivot 36 is nearer to the point 28, operates the lever 25, to throw in the clutch elements 19, 20, start ing the machine. The feed members there.n upon begin their cycle of movements, but still separated and ineffective. When the operator wishes to begin work, he now fur ther depresses the treadle rod 43. causes the link Q9 te swing on the point 28 as a fulcrum, since this point can move 9, during the time that 'the 29, first swinging on the point This " toi?` desiree e ieieiiveiy siow feed, heidejpi'eeeee @he eieedic iod 41S io e ieieiiveiy ieeeei. exten'la, Whicii ceusee the iced point G of ine feed inemiiei 59 te engage lie me. teliei iiiougii e eineii. 'ioiision )only of its vio'wei range oi nioif'eiienii.. The feed point is in this inennei: cen'eed io describe e ich iiifeiy Wide on iii'oed eifel path, eo time the ineieiiei is oniy moved forward iiztie et each step. ii iiowevei', e more ,epici feed is desired, die iieedie rod ie depifeesed fue eher, causing ine erin ino iii-:come iilted further, und eine 'wiii i'eenit in die spring pleite mounting Si@ ci' die opper feed point becoming piiiccd undeirspiing ieiieion. The feed peine wiii tiieie'foie engage die mw teiiei sooner, end i'en'min in engegeineni; e'iii. ii; iongei io e 4ioi'igei ieoge of feed Ati; iziiie iiime, die spring pinc 5B yieide ieeiiientiy io permit the eini 56 eo coneinne opemiing in. an omi path, though the feed poiiii: 50 ie const-mined io nieve, during di-ie feed movement, in e, Swingin', path., wiih #die reeeie that tile feed peine desciibee nppi'oliinznkeiy inoe ci: ieee iin'z 'tened omi. The feed may time be varied, et will. by depressing the ii'eedie i'od io e grenier ci ieee extent, ee deeii'ed by the opeieieiy The invention inej; be. embodied in oiiiiei' eneeiiic forme es io ie various deeiie, end; ceiiiein ci' die ice'oiee oi noveiiay defieriiicd nrw be adveniee'ecoSi' used :weist from c .i i.

o1 ieis of iiie pieseni'. coinbini-ition, end ii, is iiieicioi'e deeiied 'that the pieeen; embodinieii'; be coneidcied in edi re-specie es iiins izieiive, end not ieetiie'iiie,ifeifei'cnce being hed io tile appended cieiine, Feiner than to Li *foro/eo'. d, description, to indieziie he sce e o die loven lonn iet (denne-5 l i., .ci ineciiine oi iziic cinesi described new ing, in coiniiineizion, two iced elements one mounted upon the other, and meene ioia si iiiiiii2eiieoliei-y moving ceeii eieineni. teneinde eiieei. 52e fi machine o ing, in con'iin point noinnii the idcck, and :ifoi ecm-- Ming; the ii'eed ciechi 'towards the ieed point dining the cpcieiion of 'Lire ineen.

3 ii., machine o iic cieee described new ing, in coiniiineiicn, e nfimfzibieeuppoi, :i iced poinlb end 'iced iiieck en; xied by inc clase described inw ii', e ieed.

the suppoifi, and ineens Wheieby movement of like suppoi'e'eiees e i'eietive ino-vement ci die feed point and. the feed bioci.

e. ii.. machine oi die clase described new ing, in combinacion, e inoviioie support, stepm i y-e3ep feed ineens comprising e feed bloei: rigidly' secured izo the support, sind e feed point pivoed to the suppone, end meene "whereby, upon movement of the euppori, the

feed point becomes sepeieted from the eed block.

e, A ineeiiine of the ciees described hen ing, in combination, e feed point end e feed biocii: inoimied connected elo diei: the :iced pointdeeci'iioee en orb-imi. moved nient, end ineens ici moi/'ine 1bhe :iced block towards the :iced point, whereby the feed point is caused to engage the materiali for e Vniiebie intervei on each feed stroke.

(i. 1^ machine of the ciees described hav ing, in eoinbineion, e support, e feed biock, carried by the' support, e, .feed point piv oied to the Support, and en eccentric posu itively connected to one of the said feed eieinents foi Vibrating ythe feed block and the feed point and actuating the feed point icimiveiy to the feed biocii:n

7. A machine of the ciaes deeciibed, hav ing, in combineticn, two iced eieinenis, one mounted upon @bhe otheii, one of the feed eiemenie being pivoteliy rnouned upon e iioeiing pivot, and ineens for'actueting the feed elernenie about the fleeting; pivot to effect o simultaneous movemen of each feed element towards the oiici feed eiement.

8. A machine of the class described co1n- @rising feeding Ineens ici` advancing sheet meteriei composed of' elemente relatively end progieesiveiy edjueebie ioweide end from each otilei io Varizibiyciifective end ineiiectijve position, ineens dei* holding seid ieed eienients nornieiiy seperated in ineffective position, and treedieopereted ineens having equipment foi. causing; seid elements to be moved ieiefsiveiyI ioweide erich other to efi'eciive position veriebiy so 'to feed more or icss rapidly, er, Wiii,

9. A. machine of the class described coin 'ii'isingg malefici-feeding mechanism coinpoeed ci e, lower *feed oiook sind een pei feed. polimi having e range oi relative edgiieinient 'towards and ioin erich other from in eii'ective io effective-positions, spring ineens iolq hoiding; seid elements noifmeiy ineffeen Live by maintaining them separated, end :i 1reedie rod connected *for moving" seid. elements ieiei'niif'eiif eowads each other to een J dei Seid elemente eiicciive on actuation iiieieoii.

1G. i machine of the cieee described iiev ing, ie combination, normeiiy ineffective menne indented to vibete iieiwe'eii definite limits io 'ici meteiiel, and, menne foi' ieii-1 dei-ing 'the i( d menne mi.' if edecii've ee es; te feed on eegidiy, e@ Wiii,

without varying the extent of the feed strokes.

ll. A machine of the class described having, in combination, two feed elements adapted for reciprocation to feedmaterial, one of said elements being movable about an axis at an angie to the path of reciprocation, and means for shifting the anis to move seid element into and out of effective position relative to the other element.

l2. A machine of the class described comprising feeding mechanism comprising a lon'er feed block and an upper feed point, the feed block and the feed point. being mounted and connected for swinging vibration for yielding` movement with respect to each other, wherebyv said feed point describes an orbital. movement with respect. to said feed block and means for shifting the range of such orbital movement With respect to said feed bloclr, whereby seid feed point is caused to engage the material for a variable interval on each feed stroke, at will. 1

lil. A. machine'of the class described having, in combination, means comprising a spring feed point for feeding material by relativelj,v short feed steps, a feedblock cooperating with the feed point, means for operating the feeding means at relatively high speed, and a positive connection between the feeding means and theI operating means.

lfl. A machine of the class described. having, in combination, normally ineffective feeding means, driving means therefor, and,l

moveble ineens having tivo positions in one of which it renders the driving means effective to actuate the feeding means and in 'the other of"Which it renders the feeding means effective to feed material.

l5. A. machine of the eless described nav- :weies ing, in combination, feeding' mechanism comprising an element movable into and out of operative position during the operation of the machine, driving means therefor, and common means for controlling the driving means and the position of the element.

16. A machine of the class described having, in combination, feeding mechanism having an element movable into and ont of effective position during the operation of the machine, driving means therefor heving av disconnecting clutch, and a single manual control for said clutch and for said feedingmeans connected to first. shift said clutch into engagement and by a further movement to brinf said feeding mechanism into effective position.,

i7. A machine of the class described. having, in combination, a lcontinuously operable feed element alternately occupying an effective position during its feeding movement to feed material and en ineffective position during' its .return movement, means for driving the feed element, and common means for controllingr the driving means and the effective position of 'the element.

18. A machine of the class described heving, in combination, ineens for feeding material step by step between limits of' feeding movement, and means operable during the operation of the machine for causing both limits of n'iovement to advance each towards and away from the other to very CHARLES G. BROSTRM. .ALNDREW R. RlTDDEESTROM. 

